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一个php上传类

原作者: [db:作者] 来自: [db:来源] 收藏 邀请 
  1 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  2 <?php
  3 /**
  4  * php文件上传类
  5  * @file uploadclass.php
  6  * @link http://www.xinui.com
  7  * @author kamon <[email protected]>
  8  * @copyright 2012
  9  * @package UploadFile
 10  * @version 0.2beta
 11  * @LastModify 2010-7-9 22:36:05
 12  */
 13 class UploadFile {
 14     public $Path;
 15     public $UploadDir;
 16     public $SaveName;
 17     public $FileType;
 18     public $MaxSize;
 19     public $Err;
 20     public $Uploaded;
 21     public function __construct(){
 22         $this->Path = '../';
 23         $this->UploadDir = 'images/';
 24         $this->SaveName = '';
 25         $this->FileType = array('jpg','gif','bmp','png');
 26         $this->MaxSize = 2048;
 27         $this->Err = array();
 28         $this->Uploaded = false;
 29     }
 30 
 31     public function Upload($upfile, $oldfile='',$is_create_dir=false){
 32         if(is_uploaded_file($upfile['tmp_name'])){
 33             if(!empty($upfile)){
 34                 if(substr($this->UploadDir,-1,1)!='/' && !empty($this->UploadDir)){
 35                     $this->UploadDir .= '/';
 36                 }
 37                 if(trim($this->SaveName)==''){
 38                     $this->SaveName = date('YmdHis',time()).rand(100,999);
 39                 }
 40                 $fileExt = '.'.end(explode('.', $upfile['name']));
 41                 $this->SaveName .= $fileExt;
 42                 $savefile = $this->UploadDir.$this->SaveName;
 43                 $imgType = explode('/',$upfile['type']);
 44                 if($upfile['size'] == 0){
 45                     $this->Err[] = '上传失败，文件大小为0字节!';
 46                 }
 47                 if(!in_array(strtolower(substr($fileExt,1)),$this->FileType)){
 48                     $this->Err[] = '不允许上传该类型的文件！('.$fileExt.')';
 49                 }
 50                 if($upfile['error'] !=0){
 51                     $this->Err[] = '未知错误，文件上传失败！';
 52                 }
 53                 if($upfile['size']/1024 > $this->MaxSize){
 54                     $this->Err[] = '文件大小超出上限，只允许上传大小为 '. $this->MaxSize . 'k的文件！';
 55                 }
 56                 if(!file_exists($this->Path.$this->UploadDir)){
 57                  @mkdir($this->Path.$this->UploadDir,0777);//创建文件目录
 58                  }
 59                 if(!file_exists($this->Path.$this->UploadDir) && trim($this->Path.$this->UploadDir)!=''){
 60                     if($is_create_dir){
 61                         $dir_path = explode('/',$this->UploadDir);
 62                         $sub_path = $this->Path;
 63                         foreach($dir_path as $dir){
 64                             $sub_path .= $dir.'/';
 65                         //    @mkdir($sub_path,0777);
 66                         }
 67                     }else{
 68                        
 69                         $this->Err[] = '上传目录不存在且设置为不允许创建目录！';
 70                     }
 71                 }
 72                 if(!$this->Err){
 73                     @move_uploaded_file($upfile['tmp_name'],$this->Path.$savefile);
 74                     if(trim($oldfile)!='' && file_exists($this->Path.$oldfile)){
 75                         @unlink($this->Path.$oldfile);
 76                     }
 77                     $this->Uploaded = true;
 78                     return $savefile;
 79                 }else{
 80                     @unlink($upfile['tmp_name']);
 81                 }
 82             }
 83         }
 84         return trim($oldfile);
 85     }
 86 }
 87 /**
 88 //调用
 89 //if(isset($_FILES['file'])){
 90     $file = new UploadFile();
 91     $file->Path = './../';
 92     $file->UploadDir = "product/image/".date('Ymd');
 93     $filename = $file->Upload($_FILES['file']);
 94     if($file->Uploaded){
 95         echo $filename;
 96     }else{
 97         print_r($file->Err);
 98     }
 99 }
100 */
101 ?>
内嵌页面（内嵌页面支持重新上传自动删除图片）
View Code 
 1 <?php include("uploadclass.php");
 2 $myip="./../";
 3 $delid=$_GET['delid'];
 4 if(isset($delid)){
 5    unlink($myip.$delid);
 6  }
 7 if(isset($_FILES['file'])){
 8     $file = new UploadFile();
 9     $file->Path = './../';
10     $file->UploadDir = "product/image/".date('Ymd');
11     $filename = $file->Upload($_FILES['file']);
12     if($file->Uploaded){
13         
14         ?>
15         <script> parent.document.getElementById("addr").value='<?php echo $filename;?>';</script>
16         <form  method="post" action="?delid=<?php echo $filename;?>">
17 <?php echo $filename;?><input type="submit" name="submit" value="重新上传"/>
18 </form>
19         <?php
20         
21     }else{
22         //print_r($file->Err);
23         echo "<script>alert('上传文件错误错误');history.go(-1)</script>";
24     }
25 }else{
26 ?>
27 <form enctype="multipart/form-data" method="post" action="" name="upload" onsubmit="return ch();">
28 <input type="file" name="file"/>
29 <input type="submit" name="submit" value="上传"/>
30 </form>
31 <?php   
32 }
33 ?>
34 <script>
35 function ch()
36 {
37    if(upload.file.value==""){
38       alert("上传文件不能为空");
39       upload.file.focus();
40       return false;
41    }
42    return true;
43 }
44 </script>



 

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